Cloud Microphones JRS-34 P

A Cloud Ribbon: The Passive Version Continuing the JRS Series

The JRS-34-P follows Cloud's philosophy: offering a ribbon microphone that combines the sought-after qualities of classic models (texture, smoothness, transient coherence) with more modern design choices to improve consistency and reliability in the studio. This is the passive version of the JRS-34-A: the difference between these two microphones lies in passive versus active design, which mainly impacts the output level and how the mic interacts with the preamplification chain.

With the JRS-34-P, you get the most authentic "ribbon" experience: a sensitive capture that rewards good acoustics and precise placement, while still being able to handle very loud sources.

Applications: Vocals, Guitars, Brass, Overheads, and Ambience

Thanks to its extended frequency response and figure-8 polar pattern, the JRS-34-P suits a wide range of recording situations. On vocals, it delivers a silkier brightness than a condenser mic, often appreciated for taming sibilance and smoothing harshness while retaining detail. On electric guitars, it excels at thickening the sound without harshness, especially when paired with a dynamic mic to blend attack and body.

On brass and woodwinds, the ribbon helps maintain solid presence without aggressive projection. For overheads or room mics, the figure-8 pattern allows you to leverage the room's acoustics (or conversely control what is rejected) by smartly orienting the mic's sides toward unwanted elements. Finally, for podcasting and spoken word, it can offer a premium signature, provided you have sufficient clean gain and a quiet environment.

Design and Performance: Ribbon Character with Today's Control

Ultra-thin Ribbon and Natural Transients

The heart of the JRS-34-P is a 1.8-micron ribbon, designed to respond delicately to micro-dynamic variations. The result: realistic transients, a tactile sensation in the mids, and a detailed but non-aggressive high end. This approach is especially relevant when you want a "mix-ready" capture that handles EQ well without becoming shrill.

Figure-8 Pattern: Soundstage Control and Proximity Effect

The figure-8 polar pattern captures equally from front and back: a major advantage for stereo techniques (Blumlein, Mid-Side) and spatial shaping. As with many ribbons, the proximity effect can be pronounced: move the mic closer for more low-mid density, or back off for more balance and openness. Managing mic distance thus becomes a true sound design tool.

Passive Output: Recommended Preamp and Best Practices

With a output sensitivity of -49 dBv / Pa, the JRS-34-P behaves like a traditional passive ribbon: for a comfortable signal, favor a high-gain, low-noise preamp or a suitable gain booster. In practice, this keeps vocals and instruments clean without excessive hiss and allows you to get the best out of the mic's dynamics. As a precaution, and as is common with passive ribbons, it is recommended to disable phantom power when not needed and use well-maintained XLR connectors.

Level Handling and Loud Sources

With a max SPL of 138 dB SPL and above (at 1 kHz), the JRS-34-P can approach many high-level sources. This opens the door to more creative placements on amps, percussion, or brass, while retaining the signature smooth high end typical of ribbons.

Rounded Magnet Technology and Internal Damping

The microphone incorporates patented rounded magnet technology and internal damping. These elements contribute to mechanical stability and a more controlled response with fewer unwanted resonances. In the studio, this translates to more consistent captures from session to session and a sense of "control" that facilitates mixing.

Technical specifications

Frequency response - start	20 Hz	Capsule	ribbon dynamic
Frequency response - end	20 kHz	Connection	XLR
Category	studio microphone	Color	Black
Directivity	bidirectional

Transducer element	1.8-micron ribbon	Max SPL	138 dB SPL and above (at 1 kHz)
Ribbon element dimensions	0.49 cm wide, 5.9 inches long, 1.8 microns thick	Magnet technology	rounded, patented
Frequency response	20 Hz to over 20 kHz	Damping	internal
Output sensitivity	-49 dBv / Pa	Manufacturing	entirely handcrafted in the USA